From 2015 to 2016, Thornton was a radio personality for KLAZ 105.9 based in Hot Springs, Arkansas. She co-hosted the morning show "Kramer and Tiffany", as well as hosted her own mid-day show.[3] She is also a blogger for DisneyBaby.com.[4]

On February 13, 2012, Thornton announced that she was pregnant with their first child.[10] She gave birth to their first son in August 2012.[11][12] The child's godparents are actors Cassandra Scerbo and Wilmer Valderrama.[13] On October 25, 2013, Thornton announced that she was pregnant with her second child. She gave birth to their second son, in March 2014.[14] On December 4, 2015, Carney was killed in a car accident.[15]

In January 2017, Thornton began a relationship with family friend and worship pastor Josiah Capaci. The couple announced their engagement on April 8, 2017.[16] They were married on October 7, 2017.[17] The couple announced her pregnancy in April 2018,[18] welcoming their first child together, a daughter, in November 2018.[19]